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Revolutionising wheat: Developing cultivars that maintain their quality in heat and drought

28 April 2023 | Story Leonie Bolleurs | Photo Supplied

UFS PhD student and food scientist Schae-Lee Olckers’ research could contribute to a stable supply of good quality wheat and bread, even in the face of climate change.

Follow your passion in order to find your purpose. This is the mantra of food scientist and University of the Free State (UFS) PhD student Schae-Lee Olckers, whose research is set to improve wheat quality by identifying which types of wheat are better able to tolerate stress, and which proteins are most important for producing high-quality bread.

“By grasping this, it is possible to ensure that we continue to have a stable supply of good quality wheat and bread, even in the face of climate change,” says Olckers, who believes wheat is one of the most important food grains in the human diet, and one of the most important staple cereal crops in the world.

Her PhD study, ‘The influence of abiotic stress on gluten protein and baking quality in bread wheat’, under the supervision of Dr Angie van Biljon and Prof Maryke Labuschagne in the Department of Plant Sciences, and Prof Garry Osthoff in the Department of Microbiology and Biochemistry, is investigating how different levels of heat and drought stress – mostly due to climate change – affect the gluten protein composition of high-yield bread wheat.

Olckers is a food scientist at StartWell Foods (Pty) Ltd, a non-profit organisation that produces high-quality extrusion products for feeding schemes around the country. The products help to eliminate stunted growth among children.

Improving wheat breeding programmes

This research could help us find ways to adapt to climate change and continue to produce high-quality wheat and bread for people around the world. – Schae-Lee Olckers

Her research focuses on examining different types of wheat and investigating how proteins are affected by stressors like heat and drought, to understand how these stressors impact the quality of bread. She uses new proteomic methods to look at the different proteins in the wheat flour, to gain a better appreciation of how gluten proteins react to stress.

In this study Olckers is able to see how the proteins change in the various wheat cultivars, helping us to understand how the different types of wheat perform in baking, and how the proteins affect the final product.

She collaborates with the International Maize and Wheat Improvement Center (CIMMYT) in Mexico, that releases new wheat cultivars for developing countries. Their aim is to develop wheat cultivars that maintain their quality in different environments. To investigate the performance and characteristics of the seeds, both in the field and in the laboratory, CIMMYT did the field trials, quality assessment, and supplied the seeds for high-performance liquid chromatography (HPLC) and proteomics analysis.

Finding ways to adapt to climate change

She believes that understanding how these stressors impact the production of bread-baking quality in wheat will help scientists gain important insights into how climate change affects our food supply.

“Taking into consideration the current and projected intensifying heat and water deficit stresses, it is crucial to improve the understanding of these phenomena in order to implement new breeding strategies for sustainable wheat quality. This research could help us find ways to adapt to climate change and continue to produce high-quality wheat and bread for people around the world,” Olckers says.

News Archive

Max du Preez on South Africa’s leadership vacuum

2011-08-29

Present at the CR Swart Memorial Lecture was, from the left: Prof. Hussein Solomon, senior Professor in our Department of Political Science; Prof. Theo Neethling, Head of our Department of Political Science; Max du Preez and Prof. Lucius Botes,Dean of our Faculty of Humanities.
Photo: Stephen Collett

“Much has been going wrong in South Africa in the last few years and it’s all due to a lack of strong, visionary leadership. South Africans deserve better and should demand more integrity, courage and vision from the present political leadership,” veteran journalist and author Max du Preez told the audience at a packed Wynand Mouton Theatre at our university, on 25 August 2011.

Delivering this year’s CR Swart Memorial Lecture on the topic “Of Jacob, Julius, Jimmy and the Dancing Monkey”, Du Preez told the audience to look with much more critical eyes at the political leadership and decide who is doing the obvious, following his or her basest instincts or simply trying to play to the gallery. “Why look at a man like Julius Malema and let him upset us, why listen to Floyd Shivambu with his crude manners and let them define us?” Du Preez asked the more than 300 people attending the memorial lecture. The CR Swart Memorial Lecture, the 41st hosted by the UFS, attracted one of the largest crowds ever for a public lecture, with some people sitting on the steps inside the auditorium of the Wynand theatre.

Telling the story of African philospher Morena Mohlomi, who acted as a teacher to Basuto king Moshoeshoe, Du Preez told the audience that the country needs counter-intuitive leadership like the two leaders had demonstrated. Calling Mohlomi southern Africa’s first Pan Africanist, Du Preez said the extroadinary thing about Morena Mohlomi and his student was their gift of counter-intuitive leadership, leadership that was daring and visionary, leadership that did not simply do the obvious. Pointing out other visionary leaders like Nelson Mandela, Oliver Tambo, Walter Sisulu, Beyers Naude and Van Zyl Slabbert, Du Preez urged the audience to question “the quality of leadership of Cosatu, the Democratic Teachers Union that is messing up our education, the Communist Party, the Democratic Alliance, the Freedom Front Plus and Solidarity. If they don’t live up to our expectations, why do we still tolerate them?” Du Preez asked.

Du Preez also commended Prof. Jonathan Jansen, Vice Chancellor and Rector of the UFS, for his counter-intuitive leadership regarding the Reitz Residence incident and said Prof. Jansen’s solution, as controversial as it was, brought a much better outcome.

Please find attached the full speech of Max Du Preez.

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